When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
You're entire point is flawed... Kinda like saying, "if it doesn't turn with a a pipewrench when it's cold, just apply more force"
Agreed it will warm faster... but it will do so when it is at it's MOST vulnerable stage.... COLD + COLD lubrication = MINIMUM protection. So the getting a bigger hammer theory wont work.
No, not at all. What I'm saying is that driving it gently is no more damaging that letting it idle, and my used oil analysis, which indicates less than usual wear, supports that. I am convinced that what I am doing is not resulting in any unusual wear on my engine, and nothing anyone says on the internet is going to be more convincing than my UOA results.
Can you post the exact quote where they "recommend a 15 second warm-up time?" I think you'll see that they're not recommending this as a max warmup time, but a bare minimum.... in order to ensure you have sufficient oil pressure. They're instructing you not to drive away for at least 15 seconds, not at most.
The key factor is to ensure adequate oil pressure as I stated in my previous post... but here is the exact wording, just so there is no confusion (page 12 of the diesel engine supplement):
"After the engine starts, allow it to idle for about 15 seconds. Do not increase engine speed until the oil pressure gauge indicates normal pressure."
Originally Posted by ryaneverk2
The owners manual doesn't say to start and go.
I was not quoting the owner's manual. To me a 15 second idle time after starting is basically "start and go". My apologies if I confused you.
Originally Posted by ryaneverk2
Idling in cold weather is fine... that's what the Cold Ambient Package is for. When the engine oil and/or intake air gets on the cooler side, the CAP raises the idle speed and closes the EBPV partially to fully (more fully when it's colder), which puts a small load on the engine.
I sort of agree with you except for the fact that it is fine. Short term idling maybe, but here is what the diesel supplement says:
"In cold weather below 32°F (0°C) your diesel engine will slowly increase to a higher idle speed if left idling in P (Park). As the engine warms-up, the engine sound level will decrease due to the activation of PCM-controlled sound reduction features."
If idling in cold weather is fine, can you explain to me why the diesel supplement states this:
"Note: Idling in cold weather will not heat the engine to its normal operating temperature. Long periods of idling in cold weather can cause a buildup of heavy deposits of carbon and rust on valve stems causing them to stick, which in turn, can cause valve train damage."
"After the engine starts, allow it to idle for about 15 seconds. Do not increase engine speed until the oil pressure gauge indicates normal pressure."
I take that statement as Ford telling us to NOT start and go. As in, after you start it, don't immediately put it in drive and go like you see most folks driving any vehicle do. I don't take it as Ford saying to only idle for 15 seconds, then go, because any longer will harm it. I guess we don't agree on what Ford is saying there.
If idling in cold weather is fine, can you explain to me why the diesel supplement states this:
"Note: Idling in cold weather will not heat the engine to its normal operating temperature. Long periods of idling in cold weather can cause a buildup of heavy deposits of carbon and rust on valve stems causing them to stick, which in turn, can cause valve train damage
My Diesel Supplement doesn't have that statement in it. Nor do the Diesel Supplements from '01-'03 (for either the 7.3 or 6.0 in '03). Maybe it's an 04 or newer statement. The only mention of exended idling in the 00-03 supplements is as one of the severe service operating conditions for which they suggest more frequent oil changes (other sever service conditions are long towing, heavy towing, operating in severe dust conditions, and frequent short trips).
I think that the explanation for your diesel supplement stating that may be that the 6.0's turned out to have a hard time idling (but I thought that was mainly from the EGR).
There are some bulletins released by International from a few years back that discuss the CAP (or Engine Warmup Device, as they call it) which discuss frequent idling. One thing it mentions is that any deposits that may build up during an idle are burned off as soon as you work the truck again (as in normal driving). If anyone would like I can post links to them.
But for me, I've been through threads on this exact topic quite a few times before on other sites and read through past ones that have been ridiculously in-depth ( ) and what I've determined is that with my truck, I'm not worried about idling it at all. But the good thing is, if others are worried about it, they don't have to do like I do.
Don't worry about the small stuff. Crank it and drive.
Jim
Haha, I agree but in the opposite way. Some folks (not in this thread but others in the past) have made it seem like the sky is falling if you let your engine idle for a minute or two. I say there's nothing to worry about, just drive and enjoy your truck.
[color=#211d1e][font=Century][font=Verdana]If idling in cold weather is fine, can you explain to me why the diesel supplement states this: "Note: Idling in cold weather will not heat the engine to its normal operating temperature. Long periods of idling in cold weather can cause a buildup of heavy deposits of carbon and rust on valve stems causing them to stick, which in turn, can cause valve train damage."
I could not find that Note in the Power Stroke Owner's Guide Supplement for my truck. The note on page 12 cautions about adding gasoline, gasohol or alcohol to Diesel fuel.
Seems logical to let it warm up for a minute or so and then drive carefully until the engine is up to operating temperature.
[color=#211d1e][font=Century] "Note: Idling in cold weather will not heat the engine to its normal operating temperature. Long periods of idling in cold weather can cause a buildup of heavy deposits of carbon and rust on valve stems causing them to stick, which in turn, can cause valve train damage."
My 2007 manual states that. Fords concern here is wetstacking from prolonged idling. Raising the idling rpm will definately reduce wetstacking. The problem is Ford does not tell you what long periods are. My opinion of that is that it applies to people that work out of thier truck and leave it running all day like on a job site. I dont think 20 minutes constitutes a long period of idling.
It is interesting to note where those people are from that are advocating the key and go. In my opinion (remember cold is all relative), if you live in an area where when it snows and its gone in a couple of days, (as opposed to it snows in the fall and the ground is white until spring), then you really dont know what "cold" is.
I take that statement as Ford telling us to NOT start and go. As in, after you start it, don't immediately put it in drive and go like you see most folks driving any vehicle do. I don't take it as Ford saying to only idle for 15 seconds, then go, because any longer will harm it. I guess we don't agree on what Ford is saying there.
Whatever suits you, tickles me plumb to death.
Let's just enjoy our trucks and be glad their not Chevy's!
It is interesting to note where those people are from that are advocating the key and go. In my opinion (remember cold is all relative), if you live in an area where when it snows and its gone in a couple of days, (as opposed to it snows in the fall and the ground is white until spring), then you really dont know what "cold" is.
I see, so -20 isn't as cold down here as it is in Canada. It really doesn't snow so much here in the Idaho desert, it snows a dab and then the wind blows it away. But the same flake might hit you 3 or 4 times. It's cold, but it's a dry cold.
I really don't see the correlation between location and preference, we've got people fron California and North Carolina advocating letting them warm up. Seems pretty random to me, I suspect it has more to do with what you were taught as a youngster. Personally, I've seen several engines ruined from the owners letting them idle unattended, but I can't recall an instance of one blowing because they were driven cold.